Hounstine is probably a variation of the name Hunstein (I have also seen it spelled Howinstine.This is what I have found so far: Henry Hounstine (b. about 1818)married Elizabeth [Bettis?] (b. 19 Sept 1818 in Columbiana Co. OH).Their children, probably all born in Columbiana Co. were: John (b. 1840) Mary Ann (b. 30 Sept 1844, d. 26 May 1902) Henry (b. 1846) Isabel (b. 1849)
Mary Ann Hounstine married Lewis Hayburn (or Haybron) in Vinton Co. OH, 7 Dec 1871, and had eight children (one of them was my husband's grandmother). Henry married Nancy Jane Haybron in Vinton Co. OH, 1 Jan 1875. Isabelle Howinstine (sic.) married Richard Hayborn in Jackson Co. OH, 10 May 1874.
I hope this information is helpful to someone, and would appreciate information on Henry and his wife Elizabeth, where they were born, and who were their parents.